20122201200251 has 2 divisors, whose sum is σ = 20122201200252. Its totient is φ = 20122201200250.

The previous prime is 20122201200223. The next prime is 20122201200313. The reversal of 20122201200251 is 15200210222102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20122201200251 - 2³⁰ = 20121127458427 is a prime.

It is a super-2 number, since 2×20122201200251² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20122201202251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10061100600125 + 10061100600126.

It is an arithmetic number, because the mean of its divisors is an integer number (10061100600126).

Almost surely, 2^{20122201200251} is an apocalyptic number.

20122201200251 is a deficient number, since it is larger than the sum of its proper divisors (1).

20122201200251 is an equidigital number, since it uses as much as digits as its factorization.

20122201200251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 320, while the sum is 20.

Adding to 20122201200251 its reverse (15200210222102), we get a palindrome (35322411422353).

The spelling of 20122201200251 in words is "twenty trillion, one hundred twenty-two billion, two hundred one million, two hundred thousand, two hundred fifty-one".